Search For Gunman Underway After Man Shot Dead In Sydney's South West

SYDNEY, AUSTRALIA - DECEMBER 16: Police tape is streched near the Lindt Chocolate Cafe in Martin Place following a hostage standoff on December 16, 2014 in Sydney, Australia. Two were reported dead after police stormed the Sydney cafe after a gunman had been holding hostages for 16 hours. (Photo by Joosep Martinson/Getty Images)

Police are searching for a man over the shooting death of another man in Sydney’s south west on Friday night.

It is alleged an altercation between a motorist and two men walking on Matthew Street at Heckenberg just after 6.30pm last night led to the shooting.

Police say the driver confronted the two pedestrians, shooting at them, but that the shot missed and hit an innocent bystander sitting in his car.

"The car was parked, he was seated in the car," NSW Police Acting Inspector Graham Hibbs told the ABC.